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Rechargeable battery

a rechargeable battery and battery terminal technology, applied in the field of rechargeable batteries, can solve the problems of reducing the temperature sensitivity of the protective device, affecting so as to ensure the stability of the rechargeable battery and improve the mounting structure

Inactive Publication Date: 2005-12-01
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017] The present invention provides a rechargeable battery with an improved mounting structure for the electrode terminal and the second protective device that are used therein. This structure helps to ensure the stability of the rechargeable battery.

Problems solved by technology

This results in reduced temperature sensitivity of the protective device.
This makes it difficult to connect the second protective device to the electrode terminal.
This may weaken or even break the welded portion between the electrode terminal and the negative electrode tab.

Method used

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Examples

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Embodiment Construction

[0030]FIG. 2 is a partial sectional view that shows a bare cell according to an exemplary embodiment of the present invention and FIG. 3 is a top view of the bare cell shown in FIG. 2.

[0031] Referring to FIG. 2, a bare cell 100 of a rechargeable cell according to the present invention includes a can 200, an electrode assembly 210 contained in the can 200, a cap assembly 300 for sealing the top opening of the can 200, and a second protective device 330.

[0032] The can 200 may be made of a metal that is formed in the shape of a cuboid. The can itself can act as a terminal. The top of the can 200 is open and forms a top opening through which the electrode assembly 210 is contained in the can 200.

[0033] The electrode assembly 210 includes first and second electrode plates 215 and 213, respectively, and a separator 214. After the first and second electrode plates 215 and 213 are laminated with the separator 214 interposed between them, they may be rolled into a jelly-roll. A second ele...

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Abstract

The present invention discloses a rechargeable battery that has an improved mounting structure for an electrode terminal and a second protective device used therein. This improved structure improves the function of the rechargeable battery. The rechargeable battery comprises an electrode assembly that has first electrode plate, a second electrode plate, and a separator for insulating the electrode plates from each other, all of which are wound together. It also includes a can that contains the electrode assembly therein, a cap assembly that has a cap plate for sealing a top opening of the can, an electrode terminal that is insulated and inserted into a terminal through-hole formed on the cap plate, and a terminal groove formed on the top of the terminal through-hole with a shape corresponding to that of the head of the electrode terminal so that the head of the electrode terminal can be housed therein. The rechargeable battery of the present invention also includes a protective device groove spaced at a predetermined distance from the terminal groove and a second protective device housed in the protective device groove with one end connected to the top surface of the electrode terminal.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application claims priority to and the benefit of Korean Patent Application No. 2004-0039165 filed on May 31, 2004, which is hereby incorporated by reference for all purposes as if fully set forth herein. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a rechargeable battery. In particular, the present invention relates to a rechargeable battery that has an improved mounting structure for an electrode terminal and a second protective device used therein that ensures the stability of the rechargeable battery. [0004] 2. Description of the Prior Art [0005] Rechargeable batteries are being developed to power lightweight portable wireless electronic devices such as video cameras, mobile telephones, and portable computers. Commonly used rechargeable batteries include, for example, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and lithium rechargeable batter...

Claims

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Application Information

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IPC IPC(8): H01M6/50H01M10/04H01M14/00H01M50/548H01M50/559H01M50/566H01M50/583
CPCH01M2/12H01M2/30H01M2200/106H01M2/348H01M10/0431H01M2/34Y02E60/10H01M50/30H01M50/581Y02P70/50H01M50/559H01M50/583H01M50/548H01M50/566H01M50/20H01M50/543H01M50/572
Inventor KIM, JUN HO
Owner SAMSUNG SDI CO LTD
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